﻿using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Security.Principal;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Security;
using VERKProjectHopur16.Models;
using System.Configuration;
using System.Net.Mail;
using System.IO;
using System.Text;

namespace VERKProjectHopur16.Controllers
{
    /// <summary>
    /// Controls account; Logon, Logoff, Register, PasswordChange.
    /// </summary>
    [HandleError]
    public class AccountController : ParentController
    {

        public IFormsAuthenticationService FormsService { get; set; }
        public IMembershipService MembershipService { get; set; }

        protected override void Initialize(RequestContext requestContext)
        {
            if ( FormsService == null ) { FormsService = new FormsAuthenticationService(); }
            if ( MembershipService == null ) { MembershipService = new AccountMembershipService(); }

            base.Initialize(requestContext);
        }

        // **************************************
        // URL: /Account/LogOn
        // **************************************

        public ActionResult LogOn()
        {
            return View();
        }

        [HttpPost]
        public ActionResult LogOn(LogOnModel model, string returnUrl)
        {
            if ( ModelState.IsValid )
            {
                if ( MembershipService.ValidateUser(model.UserName, model.Password) )
                {
                    FormsService.SignIn(model.UserName, model.RememberMe);
                    if ( !String.IsNullOrEmpty(returnUrl) )
                    {
                        return Redirect(returnUrl);
                    }
                    else
                    {
                        return RedirectToAction("Index", "User");
                    }
                }
                else
                {
                    ModelState.AddModelError("", "The user name or password provided is incorrect.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        // **************************************
        // URL: /Account/LogOff
        // **************************************

        public ActionResult LogOff()
        {
            FormsService.SignOut();

            return RedirectToAction("Index", "Home");
        }

        // **************************************
        // URL: /Account/Register
        // **************************************

        public ActionResult Register()
        {
            ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
            return View();
        }

        [HttpPost]
        public ActionResult Register(RegisterModel model)
        {
            if ( ModelState.IsValid )
            {
                // Attempt to register the user
                MembershipCreateStatus createStatus = MembershipService.CreateUser(model.UserName, model.Password, model.Email);

                if ( createStatus == MembershipCreateStatus.Success )
                {
                    FormsService.SignIn(model.UserName, false /* createPersistentCookie */);
                    if (model.RequestSpecialist == true)
                    {
                        //Sends email to admin requesting specialit role for account
                        try
                        {
                            string strEmail = ConfigurationManager.AppSettings["Email"];
                            string srtSuject = ConfigurationManager.AppSettings["EmailSubject"];
                            using (MailMessage the_message = new MailMessage())
                            {
                                the_message.To.Add(strEmail);
                                the_message.Subject = srtSuject;
                                the_message.Body = "I want to be specialist!";
                                SmtpClient client = new SmtpClient();
                                client.EnableSsl = true;
                                client.Send(the_message);
                            }
                        }
                        catch (Exception ex)
                        {
                            String LogFilePath = HttpContext.Server.MapPath(ConfigurationManager.AppSettings["LogFile"]);
                            String strPath = Path.GetDirectoryName(LogFilePath);
                            if (!Directory.Exists(strPath))
                            {
                                Directory.CreateDirectory(strPath);
                            }
                            using (StreamWriter writer = new StreamWriter(LogFilePath, true, Encoding.Default))
                            {
                                writer.WriteLine(string.Format("Could not send email notification.For: {1}{2}", ex.Source, ex.StackTrace));
                            }
                        }
                    }
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    ModelState.AddModelError("", AccountValidation.ErrorCodeToString(createStatus));
                }
            }

            // If we got this far, something failed, redisplay form
            ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
            return View(model);
        }

        // **************************************
        // URL: /Account/ChangePassword
        // **************************************

        [Authorize]
        public ActionResult ChangePassword()
        {
            ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
            return View();
        }

        [Authorize]
        [HttpPost]
        public ActionResult ChangePassword(ChangePasswordModel model)
        {
            if ( ModelState.IsValid )
            {
                if ( MembershipService.ChangePassword(User.Identity.Name, model.OldPassword, model.NewPassword) )
                {
                    return RedirectToAction("ChangePasswordSuccess");
                }
                else
                {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
            return View(model);
        }

        // **************************************
        // URL: /Account/ChangePasswordSuccess
        // **************************************

        public ActionResult ChangePasswordSuccess()
        {
            return View();
        }

    }
}
